jueves, 14 de marzo de 2013

MEANS OF TRANSPORT

1. COCHE ----------------------------  CAR
2. VEHICULO TODOTERRENO ---  ALL-TERRAIN VEHICLE
3. DESCAPOTABLE  ------------ ---  CONVERTIBLE
4. MONOVOLUMEN ---------------  PEOPLE CARRIER
5. LIMUSINA  ------------                            ---  LIMOUSINE
6. BICICLETA                               ---  BIKE // BICYCLE
7. CARAVANA                             --- CARAVAN
8. AUTOBUS                                 --- BUS
9. AUTOCAR                                --- COACH
10. AUTOBUS DOS PISOS         --- DOUBLE-DECKER BUS
11. CAMION                                --- TRUCK // LORRY
12. CAMION CISTERNA            --- TANKER
13. CAMIONETA                        --- VAN
14. HORMIGONERA                  --- CONCRETE MIXER TRUCK
15. QUITANIEVES                      --- SNOWBLOWER
16. BARREDORA                        --- STREET SWEEPER
17. TREN                                     --- TRAIN
18. TRANVIA                              --- TRAM
19. AVION                                   --- PLANE //AEROPLANE
20. BARCO                                  --- SHIP
21. BARCA                                  --- BOAT
22. AERODESLIZADOR             --- HOVERCRAFT
23. PETROLERO                         --- OIL TANKER
24. YATE                                      --- YACHT
25. LANCHA                               --- RUNABOUT
26. HELICOPTERO                     --- HELICOPTER
27. GLOBO AEROSTATICO     --- BALLOON
28. MOTOCICLETA                   --- MOTORBIKE// MOTORCYCLE
29. SCOOTER                            --- SCOOTER
30. METRO                                 --- UNDERGROUND // SUBWAY // TUBE


miércoles, 13 de marzo de 2013

PARTS OF A BIKE


PARTS OF A CAR

Aerial (GB)
antena
Antenna (US)
antena
Bodywork
carrocería
Hood (US)
capó
Bonnet (GB)
capó
Trunk (US)
maletero
Boot (GB)
maletero
Brake
freno
Engine
motor
Exhaust pipe
tubo de escape
Gear lever (GB)
palanca de cambios
Gear shift (US)
palanca de cambios
Handbrake
freno de mano
Headlight
faro delantero
Horn
bocina
Rear-view mirror
espejo retrovisor
Seat belt
cinturón de seguridad
Steering wheel
volante
Tire (US)
neumático
Tyre (GB)
neumático
Windscreen (GB)
Parabrisas, luna
Windscreen wiper (GB)
limpiaparabrisas

martes, 12 de marzo de 2013

MECHANISMS


MECHANISMS
1.CLASSIFICATION
-         TRANSMITTING MOTION
    LINEAR
     ROTARY
-         TRANSFORMING MOTION
 ROTARY TO LINEAR
 ROTARY TO RECIPROCATING

2. LINEAR MOTION MECHANISMS

2.1.         LEVERS
A lever is a rigid bar that is supported by a fulcrum
F: Force or Effort
R: Resistance or Load
d: distance from  force to  fulcrum
r: distance from  resistance to fulcrum

Law of the lever  F.d=R.r

Types:       Class 1: hammer, scissors
                 Class 2: wheelbarrow
                 Class 3: pincers

2.2.         FIX PULLEY        F=R
2.3.         MOVABLE PULLEY     F= R/2
2.4.         COMPOUND PULLEY    F=R/2*N

3.ROTARY MOTION MECHANISMS


3.1.FRICTION DRIVES

N1*D1=N2*D2

1  PRIMARY DRIVE WHEEL
2  OUTPUT WHEEL

i= GEAR RATIO   i=D1/D2

D= DIAMETER
N= VELOCITY (RPM) Revolution per minute

3.2.  PULLEYS WITH BELT

N1*D1=N2*D2

3.3.  PULLEYS TRAIN WITH  BELT

N4/N1= D1*D3/D2*D4

N1*D1=N2*D2
      N2=N3
N3*D3=N4*D4

i=D1/D2
i=D3/D4
iTOTAL= D1*D3/D2*D4

3.4. WORM GEAR (TORNILLO SIN FIN)

4. MECHANISMS THAT TRANSFORM MOTION

4.1.         FROM ROTARY TO LINEAR
A.    RACK AND PINION SYSTEM (PIÑON-CREMALLERA)

L= P*Z*N
L= VELOCITY OF THE RACK (mm/min)
Z= NUMBER OF TEETH
N= NUMBER OF ROTATIONS PER MINUTE

B.     NUT AND BOLT SYSTEM (TORNILLO-TUERCA)

F*2Πr= R*ρ
ρ= thread (paso de rosca)

C.     WINCH AND CRACK HANDLE (MANIVELA-TORNO)

F*l=R*r

r=radius of the winch
l= length of the crack handle